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English Dictionary - With Multi-Lingual Search Definitions atrium noun (atri, a, pl2=atriums) (context, architecture) A square hall lighted from above, into which rooms open at one or more levels. (anatomy) A body cavity or chamber, especially an upper chamber of the heart that receives blood from the veins and forces it into a ventricle. An auricle. In higher vertebrates, the right atrium receives blood from the superior vena cava and inferior vena cava, and the left atrium receives blood from the left and right pulmonary veins. Etymology: From atriumLatin, Ätrium (entry hall)      Full Definition of atrium  Find:   Words Starting With:   Words Ending With:   Words Containing:   Words That Match:    Translate Into:    Dutch   French   German    Italian   Spanish     Show 51015202550 results per page. Browse the Dictionary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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